"Hi, I want to know functionality of Inventory Transfer case. We have warehouse in another country. If its direct customer shipment then I can use customer shipment entry for making packing slip for particular SO as link. But what if its just inventory transfer from 1 warehouse to another country warehouse. How to make paking slip for this case including link of SO line and Rel. There is transfer order shipment but in that whether I can link SO or not I have no idea as we don't have lience. Can you please guide me in Epicor where I can use this feature. In short, I want to link inventory transfer against SO."

If I use inter plant, then too it will not link with SO correct?
It will manipulate with entered quantity. If transfer would related to SO then it would have great!!
We can know against this SO, inventory is transfer from 1 plant/warehouse to another :)

If it is as you say, ""just inventory transfer from 1 warehouse to another country warehouse"" the plant to plant or company to company will work well.

In a similar situation, what we do is to ship from (say) company B company during the month driving inventory negative in that company. Then at the end of the month (or sometimes weekly) ship from company A to company B enough to bring the stock levels in B back to zero. We have had to write a ODBC query to show the true stock level during the month combining stock in Company A and B

If you want to transfer to the new plant or company and then ship it to a customer, I would suggest looking into service connect so such a request triggers several action: As explained we haven't needed it enough to buy the customization. But it would involve:
a) Stock transfer
b) Possible stock receipt
c) Sales order shipment from the new stock location